妊娠中晚期正常孕妇子宫动脉血流阻力的研究  

Study on the Uterine Arterial Resistance of Normal Pregnant Women During the Second and Third Trimesters of Pregnancy

作　　者：余玉华[1] 钟春华[1] 周丽霞[1] 

机构地区：[1]南方医科大学附属东莞市石龙人民医院胎儿医学中心,广东东莞523326

出　　处：《中外医疗》2014年第12期31-32,共2页China & Foreign Medical Treatment

摘　　要：目的：研究正常妊娠中晚期孕妇子宫动脉（UtA）的彩色多普勒超声血流阻力的特征。方法选择该院2011年4月—2013年8月检查并于该院正常分娩，经彩色多普勒超声检查465例妊娠20~40周的正常单胎胎儿，测量孕妇双侧子宫动脉（UtA）的血流动力学参数：搏动指数（PI）、阻力指数（RI）、心室收缩期峰值血流速度/心室舒张末期血流速度（S/D）及舒张早期切迹。结果正常中晚孕期孕妇UtA-PI、UtA-RI及UtA-S/D与胎儿孕周呈线性负相关。随孕周增加，其值显著下降。舒张早期切迹随孕周增加而消失。结论彩色多普勒彩超显示子宫血流动力学改变，可作为妊娠期间的综合监测指标。Objective To study the characteristics of uterine artery（UtA） resistance showed by color Doppler ultrasound during the second and third trimesters of normal pregnancy. Methods A total of 465 pregnant women with normal singletons of 20~40 weeks of gestation underwent antenatal color Doppler ultrasound examination and delivered normally in our hospital from April, 2011 to August, 2013 were selected. The hemodynamic parameters of the pregnant women＇s bilateral uterine artery （UtA） included resis-tance index （RI）, pulsatility index （PI）, systolic/diastolic ratio（S/D） and early diastolic noctch. Results The UtA-PI value, UtA-RI value and UtA-S/D ratio of normal pregnant women during the second and third trimesters of pregnancy had negative linear corre-lation with the fetal gestational age, and decreased significantly with the increase of the gestational weeks. And the early diastolic notch of uterine artery disappeared with the increase of gestational age. Conclusion The changes of uterine artery hemodynamics showed by color Doppler ultrasound can be taken as the comprehensive monitoring indexes during pregnancy.

关 键 词：彩色多普勒 子宫动脉 

分 类 号：R4[医药卫生—临床医学]